Germany will need to raise their game against Poland if they want to build on their opening Group C win over Ukraine at Euro 2016, says Joachim Low.
The world champions eased to a 2-0 victory in Lille on Sunday thanks to Shkodran Mustafi's first international goal and an injury-time strike from substitute Bastian Schweinsteiger.
Low's side therefore lead Poland on goal difference after their neighbours beat Northern Ireland 1-0.
But the head coach, who saw Germany lose 2-0 in Warsaw in qualifying for the tournament, knows his team will need to be better when they meet Poland in Paris on Thursday.
"We have both won, so the game is really important for the future of the group," Low said.
"I think we will really have to put in some work.
"Poland are in any case a strong team. We've played them twice and of course we lost once.
"With [Robert] Lewandowski they are strong in attack. Like Ukraine a little, they have dangerous players going forward."
‘Arteta, Alonso, Emery, me… none of us were physical players – we needed the understanding of the game. That probably helped us move into management’: Premier League boss reveals reasons for natural career progression
‘England have the players to win the World Cup – it’ll be tough for Thomas Tuchel to do a bad job, with the squad he has at his disposal’ Former Three Lions winger backs new boss after gentle qualifying draw
